2318190840 has 448 divisors, whose sum is σ = 9188544960. Its totient is φ = 515082240.

The previous prime is 2318190829. The next prime is 2318190841. The reversal of 2318190840 is 480918132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2318190795 and 2318190804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318190841) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 8368782 + ... + 8369058.

It is an arithmetic number, because the mean of its divisors is an integer number (20510145).

Almost surely, 2^2318190840 is an apocalyptic number.

2318190840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2318190840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4594272480).

2318190840 is an abundant number, since it is smaller than the sum of its proper divisors (6870354120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2318190840 is a wasteful number, since it uses less digits than its factorization.

2318190840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2318190840 is about 48147.5943324275. The cubic root of 2318190840 is about 1323.4769903002.

The spelling of 2318190840 in words is "two billion, three hundred eighteen million, one hundred ninety thousand, eight hundred forty".